What is the primary purpose of set screws?

Machine Design MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Machine Designmechanical-engineering-mcqs › machine-design
Published
26 Jan 2019
Last updated
28 May 2026

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Choose the correct answer

Explanation

Option A describes small tap bolts with various head shapes, which is incorrect for set screws. Option B refers to slotted screws used with nuts, not set screws. Option C correctly states that set screws are used to prevent relative motion between parts, which is their main function. Option D compares them to studs, which is inaccurate. Option E is incorrect as option C is correct.

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